Ogdensburg, New York, U.S.A. 1-866-NORTEC-1 Ottawa, Ontario, Canada 1-866-NORTEC-1 ENGINEERING MANUAL PRESSURE STEAM HUMIDIFIERS The LS Series is a cost effective way to provide precise humidity control, especially in facilities with existing steam boilers. NORTEC offers a wide variety of distributor lengths and multi-distributor arrangements to meet specific project requirements. Figure #1 Directional Flow PRINCIPLE OF OPERATION Single and multiple distributor humidifiers operate on the same basic principle. Steam and condensate enter the humidifier at the inlet. The steam then circulates through the steam jacket around the dispersion tube. This process preheats the dispersion tube to ensure only condensate-free steam exits the orifices of the dispersion tube. The steam then flows from the steam jacket into the separator. The steam is directed into a circular vertically rising flow, around the internal baffle. This causes the condensate to fall out. The condensate drains though the steam trap and can be returned to the boiler. When there is a call for humidity the steam valve opens and allows steam to flow into the dispersion tube where it is discharged. If any condensate is formed when passing though the control valve, it is re-evaporated inside the preheated dispersion tube. In the case of the multiple distributor configuration, the steam source is split after the strainer. One line feeds all the steam jackets around the dispersion tubes to keep them hot and the other feeds to the separator control valve assembly. Separator Figure #2 Multi-Distributor Application Distributor Header Steam Jacket Piping Separator Inlet Piping Valve & Actuator Separator 3/4" NPT Strainer Ventilation Duct Printed in Canada Multi-distributor units are ideal when larger capacities of steam are required for humidification in a single location. Form #07-222 -1- Steam Traps 3/4" NPT NOTE: All shaded areas by Nortec.
Table #1 Model Selection for Single Distributor Humidifiers in lbs/hr (kg/hr) Steam Pressure to Humidifier's Supply Connection in psig (kpa) Model Valve 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40 45 50 Cv (14) (21) (28) (34) (41) (48) (55) (62) (69) (76) (83) (90) (96) (103) (138) (172) (207) (241) (276) (310) (345) 200 0.1 3 3 4 4 5 5 5 6 6 6 6 7 7 7 8 10 11 12 13 14 16 LS1 ( 1 ) ( 1 ) ( 2 ) ( 2 ) ( 2 ) ( 2 ) ( 2 ) ( 3 ) ( 3 ) ( 3 ) ( 3 ) ( 3 ) ( 3 ) ( 3 ) ( 4 ) ( 5 ) ( 5 ) ( 5 ) ( 6 ) ( 6 ) ( 7 ) 0.22 5 6 7 8 9 9 10 11 11 12 12 13 13 14 16 18 20 23 25 27 30 ( 2 ) ( 3 ) ( 3 ) ( 4 ) ( 4 ) ( 4 ) ( 5 ) ( 5 ) ( 5 ) ( 5 ) ( 5 ) ( 6 ) ( 6 ) ( 6 ) ( 7 ) ( 8 ) ( 9 ) ( 10 ) ( 11 ) ( 12 ) ( 14 ) 0.4 7 9 10 11 12 13 14 15 16 16 17 18 18 19 22 25 29 32 35 38 41 (3) (4) (5) (5) (5) (6) (6) (7) (7) (7) (8) (8) (8) (9) (10) (11) (13) (15) (16) (17) (19) 0.75 13 16 18 21 23 24 26 28 29 31 32 33 34 36 42 48 54 60 66 72 78 ( 6 ) ( 7 ) ( 8 ) ( 10 ) ( 10 ) ( 11 ) ( 12 ) ( 13 ) ( 13 ) ( 14 ) ( 15 ) ( 15 ) ( 15 ) ( 16 ) ( 19 ) ( 22 ) ( 24 ) ( 27 ) ( 30 ) ( 33 ) ( 35 ) 1.3 22 27 31 34 38 41 44 46 49 52 54 56 58 60 70 80 90 100 110 120 130 (10) (12) (14) (15) (17) (19) (20) (21) (22) (24) (24) (25) (26) (27) (32) (36) (41) (45) (50) (54) (59) 2.2 34 41 48 53 58 63 67 71 75 80 83 86 89 92 108 123 139 154 170 185 201 (15) (19) (22) (24) (26) (29) (30) (32) (34) (36) (38) (39) (40) (42) (49) (56) (63) (70) (77) (84) (91) 2.8 40 49 57 63 69 75 80 85 90 95 99 102 106 110 128 147 165 184 202 221 239 (18) (22) (26) (29) (31) (34) (36) (39) (41) (43) (45) (46) (48) (50) (58) (67) (75) (83) (92) (100) (108) 4.4 47 59 69 78 87 95 102 109 116 122 128 134 139 145 170 193 214 233 251 268 284 (21) (27) (31) (36) (39) (43) (46) (49) (53) (55) (58) (61) (63) (66) (77) (88) (97) (106) (114) (122) (129) 300 5.5 72 91 107 121 135 147 159 170 180 191 200 210 219 228 268 305 339 370 399 427 454 LS2 (33) (41) (49) (55) (61) (67) (72) (77) (82) (87) (91) (95) (99) (103) (122) (139) (154) (168) (181) (194) (206) 7.5 79 100 119 136 152 166 180 193 206 218 230 241 252 263 312 357 398 436 473 507 540 (36) (46) (54) (62) (69) (76) (82) (88) (94) (99) (104) (110) (115) (119) (142) (162) (181) (198) (215) (230) (245) 450 10 105 136 162 187 209 230 250 269 287 305 322 338 354 370 442 508 569 626 681 732 782 LS3 (48) (62) (74) (85) (95) (105) (114) (122) (131) (139) (146) (154) (161) (168) (201) (231) (259) (285) (309) (333) (355) 12 111 145 175 203 228 253 276 298 319 340 360 379 398 416 503 582 656 725 792 855 916 (51) (66) (80) (92) (104) (115) (125) (135) (145) (154) (163) (172) (181) (189) (228) (264) (298) (330) (360) (389) (417) 600 20 144 187 226 261 294 325 355 383 410 436 462 487 511 534 644 745 839 927 1011 1092 1170 LS3 (65) (85) (103) (119) (134) (148) (161) (174) (186) (198) (210) (221) (232) (243) (293) (339) (381) (421) (460) (496) (532) 28 168 217 259 298 334 368 400 431 460 488 516 542 568 593 709 816 914 1007 1094 1178 1258 (76) (98) (118) (136) (152) (167) (182) (196) (209) (222) (234) (246) (258) (269) (322) (371) (416) (458) (497) (535) (572) -2-
SINGLE DISTRIBUTOR HUMIDIFIER SELECTION To select a single distributor humidifier complete the following steps: 1. Calculate humidification load as per NORTEC manual, Form #124B. For example, lets assume calculated humidification load is 70 lbs/hr. 2. Determine steam pressure at the inlet to humidifier (usually from the project files). e.g.: lets assume steam pressure is equal to 10 psig. 3. To select the correct LIVESTEAM model refer to Table #1 referencing the steam supply pressure and humidifier output. Read down the pressure column to the nearest larger humidifier output then find required humidifier and valve Cv in left hand side columns. e.g.: We will read 10 psig column to 75 lbs/hr and it will point to Model 200 LS1 and valve Cv 2.2. 4. From the project files determine duct dimensions. Lets assume that the height of the duct is 24" and width is 50". 5. For available distributor lengths see Table #3. Always choose distributor of equal or shorter insertion length (Dim.L) than ventilation duct width. e.g.: From Table #3 we will find a distributor of 48" insertion length will suit our needs. 6. If required, absorption distance can be verified by using NORTEC manual, Form #163D. Figure #3 Single Distributor Humidifier Strainer Actuator Steam Valve Separator Steam Trap 7. Single distributor humidifiers require one strainer. Strainer sizes are stated in Figure #7. e.g.: For Model 200 LS1 strainer size is 1/2" NPT. 8. Single distributor humidifiers require one steam trap. For available steam traps refer to NORTEC submittals. 9. Select desired actuator and accessories by using NORTEC submittals. MULTI-DISTRIBUTOR HUMIDIFIER SELECTION LS SERIES multi-distributor humidifiers include all the primary components of single distributor units. See Figure #2. To select a multi-distributor humidifier complete the following steps: 1. Calculate humidification load as per NORTEC manual, Form #124B. Ventilation duct For example: Lets assume calculated humidification load is 225 lbs/hr. 2. Determine steam pressure at the inlet - usually from the project files. e.g.: Lets assume pressure is equal to 15 psig. 3. To select the correct LIVESTEAM model refer to Table #2 referencing the steam supply pressure and humidifier output. Read down the pressure column to the nearest larger humidifier output then find required separator and valve Cv in left hand side columns. In our example, we will read 15 psig column to 228 lbs/hr and it will point to Model 300 with valve Cv 5.5. 4. From the project files determine duct dimensions. e.g.: Assume height of the duct is 36" and width of the duct is 60". -3-
Table #2 Separator and Valve Selection Multiple Distributor Humidifiers in lbs/hr (kg/hr) Steam Pressure to Humidifier's Supply Connection in psig (kpa) Model Valve 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40 45 50 Cv ( 14 ) ( 21 ) ( 28 ) ( 34 ) ( 41 ) ( 48 ) ( 55 ) ( 62 ) ( 69 ) ( 76 ) ( 83 ) ( 90 ) ( 96 ) ( 103 ) ( 138 ) ( 172 ) ( 207 ) ( 241 ) ( 276 ) ( 310 ) ( 345 ) 200 0.10 3 3 4 4 5 5 5 6 6 6 6 7 7 7 8 10 11 12 13 14 16 (1) (1) (2) (2) (2) (2) (2) (3) (3) (3) (3) (3) (3) (3) (4) (5) (5) (5) (6) (6) (7) 0.22 5 6 7 8 9 9 10 11 11 12 12 13 13 14 16 18 20 23 25 27 30 (2) (3) (3) (4) (4) (4) (5) (5) (5) (5) (5) (6) (6) (6) (7) (8) (9) (10) (11) (12) (14) 0.40 7 9 10 11 12 13 14 15 16 16 17 18 18 19 22 25 29 32 35 38 41 (3) (4) (5) (5) (5) (6) (6) (7) (7) (7) (8) (8) (8) (9) (10) (11) (13) (15) (16) (17) (19) 0.75 13 16 18 21 23 24 26 28 29 31 32 33 34 36 42 48 54 60 66 72 78 ( 6 ) ( 7 ) ( 8 ) ( 10 ) ( 10 ) ( 11 ) ( 12 ) ( 13 ) ( 13 ) ( 14 ) ( 15 ) ( 15 ) ( 15 ) ( 16 ) ( 19 ) ( 22 ) ( 24 ) ( 27 ) ( 30 ) ( 33 ) ( 35 ) 1.30 22 27 31 35 38 41 44 47 49 52 54 56 59 61 71 81 91 101 112 122 132 (10) (12) (14) (16) (17) (19) (20) (21) (22) (24) (24) (25) (27) (28) (32) (37) (41) (46) (51) (55) (60) 2.20 35 43 50 56 61 66 71 75 79 84 87 91 94 97 114 130 146 163 179 195 212 (16) (20) (23) (25) (28) (30) (32) (34) (36) (38) (39) (41) (43) (44) (52) (59) (66) (74) (81) (88) (96) 2.80 43 53 62 69 75 81 87 92 97 103 107 111 115 119 139 159 179 199 219 239 260 (20) (24) (28) (31) (34) (37) (39) (42) (44) (47) (49) (50) (52) (54) (63) (72) (81) (90) (99) (108) (118) 4.4 61 76 90 102 113 123 133 142 151 159 167 175 182 190 223 253 280 306 330 353 374 (28) (35) (41) (46) (51) (56) (60) (65) (69) (72) (76) (80) (83) (86) (101) (115) (127) (139) (150) (160) (170) 300 5.5 77 98 116 132 147 161 174 187 199 210 221 232 242 252 299 341 380 416 450 482 513 (35) (44) (53) (60) (67) (73) (79) (85) (90) (96) (101) (105) (110) (115) (136) (155) (173) (189) (204) (219) (233) 7.5 86 111 133 153 172 189 206 222 237 252 266 280 293 306 367 422 473 522 567 611 653 (39) (51) (61) (70) (78) (86) (94) (101) (108) (114) (121) (127) (133) (139) (167) (192) (215) (237) (258) (278) (297) 450 10 125 160 190 217 243 266 289 310 330 350 369 387 405 422 502 575 642 705 764 820 874 (57) (73) (86) (99) (110) (121) (131) (141) (150) (159) (168) (176) (184) (192) (228) (261) (292) (320) (347) (373) (397) 12 127 165 199 230 259 286 312 337 361 384 407 428 450 470 567 656 738 816 890 961 1030 (58) (75) (90) (105) (118) (130) (142) (153) (164) (175) (185) (195) (204) (214) (258) (298) (336) (371) (405) (437) (468) 600 20 238 300 354 402 446 487 526 563 598 632 664 695 725 754 889 1011 1122 1226 1323 1415 1504 (108) (136) (161) (183) (203) (222) (239) (256) (272) (287) (302) (316) (330) (343) (404) (459) (510) (557) (601) (643) (683) 28 266 335 394 448 497 543 585 626 665 702 738 772 805 838 987 1121 1243 1358 1465 1567 1664 (121) (152) (179) (204) (226) (247) (266) (285) (302) (319) (335) (351) (366) (381) (449) (509) (565) (617) (666) (712) (756) 800 40.0 538 659 761 850 932 1006 1076 1141 1203 1275 1324 1374 1424 1473 1721 1969 2217 2465 2713 2961 3209 ( 244 ) ( 299 ) ( 345 ) ( 386 ) ( 423 ) ( 456 ) ( 488 ) ( 518 ) ( 546 ) ( 578 ) ( 601 ) ( 623 ) ( 646 ) ( 668 ) ( 781 ) ( 893 ) ( 1006 ) ( 1118 ) ( 1231 ) ( 1343 ) ( 1456 ) -4-
5. For available distributor lengths see Table #3. Always choose distributor of equal or shorter insertion length (Dim.L) than ventilation duct width. e.g.: Proper selection is distributor of 60" in length. 6. For the recommended quantity of distributors, based on the duct dimensions, refer to Table #5. e.g.: Two distributors are recommended. 7. For the recommended distributor capacities refer to Table #4. Divide humidifier output by the number of distributors required. Then find the distributor model which will have recommended output equal or greater than calculated number. e.g.: Calculated output per distributor will be 228 lbs/hr divided by 2 equals 114 lbs/hr. From Table #4 we see that distributors LS1 will suit our needs. 8. Select wye strainer using Table #6. e.g.: In Table # 6 read the row 15 psi to the nearest larger strainer capacity than required capacity of humidifier (228 lbs/hr). Refer to upper row for strainer nominal diameter. Strainer will be 1" nominal diameter. 9. Multiple distributor humidifiers usually require two steam traps. Some larger systems could require up to 3 steam traps (refer to the submittal drawings for details). For available steam traps refer to NORTEC submittals. 10. Select distributor header size using Table #7. e.g.: Header size will be 1 1/4". 11. If required, absorption distance can be verified using NORTEC manual, Form #163D. 12. Then select desired actuator and accessories using NORTEC submittals. DI WATER APPLICATIONS In certain applications the use of pure water is required to ensure there is no chemical or mineral carry-over to the process. Clean rooms, electronic manufacturing, and operating rooms are examples where pure water is commonly used. For these applications NORTEC offers LS SERIES humidifiers for use with deionized (DI) water. With NORTEC LIVESTEAM for DI applications all wetted parts are manufactured from 304 stainless steel. Refer to the previous chapters for selection method. For a single tube application refer to Table #8 to select your Stainless Steel valve and separator. For a multiple tube application refer to Table #9. ELIMINATING HEAT EXCESS FROM LIVESTEAM HUMIDIFIERS Heat generated by a distributor in the duct during non-humidifying periods may not be desirable in certain applications. If heat gain is a concern consider the following solutions: 1. Manual shut off valve (by others). This is an inexpensive way of disconnecting humidifier from the steam source during non-humidifying periods. Manual shut off valve has to be installed between humidifier s wye strainer and steam main to allow maintenance without shutting down the entire steam system. 2. Automatic shutoff valve (by others). Installed on the humidifier steam supply line in addition to the manual shut off valve (refer to the local building code). Upon activation it will disconnect humidifier from the steam source during non-humidifying periods. 3. Distributor insulation (NORTEC option). Minimizes heat gain from distributor(s) during humidification and non-humidification seasons. Insulation changes the outside dimension of the distributor causing larger air pressure drop across the distributors. It also increases absorption distance because distributor has to discharge in the direction of the air flow. -5-
CONDENSATE RETURN PIPING If condensate from humidifier cannot be returned to the boiler by gravity it is possible, in certain cases, to lift condensate. Figure #4 shows the typical condensate return installation. Figure #4 Condensate Return Piping Steam Main Manual Shut-Off Valve In theory, one pound of pressure can elevate condensate 28 inches. Taking into consideration pressure drop on the steam trap and check valve, pipe friction and back pressure in the condensate return main a more realistic value would be 10-14 inches per 1 pound of steam pressure at the steam trap. Refer to ASHRAE handbook for detailed calculation method. H Condensate Return Main Steam Trap Strainer Ventilation duct Table #3 Available Insertion Length DIM. L LS1 LS2 LS3 Check Valve inch m 12 0.305 X X 18 0.457 X X 24 0.610 X X X 30 0.762 X X X 36 0.914 X X X 48 1.219 X X X 60 1.524 X X X 72 1.829 X X X 84 2.134 X X X 96 2.438 X X X 108 2.743 X X X 120 3.048 X X X 132 3.353 X X X 144 3.658 X X X Table #4 Recommended Distributor Capacities Distributor Length Table #5 Recommended Distributor Quantity MODEL LS1 LS2 LS3 lbs/hr kg/hr lbs/hr kg/hr lbs/hr kg/hr Shorter than 48" 100 45 150 68 400 182 Longer than 48" 150 68 250 114 550 250 Duct Height Recommended Quantity of Distributor up to 24" 1 25" to 36" 2 37" to 48" 3 49" to 72" 4 73" to 96" 5 97" and above 6 Final duct relative humidity, air velocity, and available absorption distance will affect the quantity of distributors required. Refer to Absorption Distance Manual, Form # 93-163D. -6-
Table #6 Wye Strainer Size Steam Pressure Strainer Nominal Diameter in Inches 3/4 1 11/4 11/2 2 21/2 psig kpa lbs/hr kg/hr lbs/hr kg/hr lbs/hr kg/hr lbs/hr kg/hr lbs/hr kg/hr lbs/hr kg/hr 2 14 105 48 182 83 255 116 346 157 638 290 912 414 5 34 124 56 215 98 301 137 409 186 753 342 1075 489 10 69 155 70 270 123 378 172 512 233 944 429 1348 613 15 103 186 85 324 147 454 206 616 280 1135 516 1621 737 20 138 218 99 379 172 530 241 720 327 1326 603 1894 861 25 172 249 113 433 197 607 276 824 374 1517 690 2167 985 30 207 281 128 488 222 683 311 927 421 1708 776 2440 1109 35 241 312 142 543 247 760 345 1031 469 1899 863 2713 1233 40 276 343 156 597 271 836 380 1135 516 2090 950 2986 1357 45 310 375 170 652 296 912 415 1238 563 2281 1037 3259 1481 50 345 406 185 706 321 989 450 1342 610 2472 1124 3532 1605 Table #7 Header Sizing Header capacity Header capacity Header nom. diameter lbs/hr kg/hr inch 96 43 3/4 155 71 1 244 111 1 1/4 366 166 1 1/2 602 274 2 860 391 2 1/2 1327 603 3 1775 807 3 1/2 2285 1039 4 3591 1632 5 Table #8 Stainless Steel Valve Single Distributor Steam Pressure to Humidifier's Supply Connection in psig (kpa) Model Valve 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40 45 50 Cv (14) (21) (28) (34) (41) (48) (55) (62) (69) (76) (83) (90) (96) (103) (138) (172) (207) (241) (276) (310) (345) 200 0.1 3 3 4 4 5 5 5 6 6 6 6 7 7 7 8 10 11 12 13 14 16 LS1 (1) (1) (2) (2) (2) (2) (2) (3) (3) (3) (3) (3) (3) (3) (4) (5) (5) (5) (6) (6) (7) 0.22 5 6 7 8 9 9 10 11 11 12 12 13 13 14 16 18 20 23 25 27 30 (2) (3) (3) (4) (4) (4) (5) (5) (5) (5) (5) (6) (6) (6) (7) (8) (9) (10) (11) (12) (14) 0.4 7 9 10 11 12 13 14 15 16 16 17 18 18 19 22 25 29 32 35 38 41 (3) (4) (5) (5) (5) (6) (6) (7) (7) (7) (8) (8) (8) (9) (10) (11) (13) (15) (16) (17) (19) 0.75 13 16 18 21 23 24 26 28 29 31 32 33 34 36 42 48 54 60 66 72 78 ( 6 ) ( 7 ) ( 8 ) ( 10 ) ( 10 ) ( 11 ) ( 12 ) ( 13 ) ( 13 ) ( 14 ) ( 15 ) ( 15 ) ( 15 ) ( 16 ) ( 19 ) ( 22 ) ( 24 ) ( 27 ) ( 30 ) ( 33 ) ( 35 ) 0.95 16 20 23 26 29 31 33 35 37 39 41 42 44 45 53 60 68 76 83 91 98 (7) (9) (10) (12) (13) (14) (15) (16) (17) (18) (19) (19) (20) (20) (24) (27) (31) (34) (38) (41) (44) 1.3 22 27 31 34 38 41 44 46 49 52 54 56 58 60 70 80 90 100 110 120 130 (10) (12) (14) (15) (17) (19) (20) (21) (22) (24) (24) (25) (26) (27) (32) (36) (41) (45) (50) (54) (59) 1.75 28 34 40 44 49 53 56 60 63 67 69 72 74 77 90 103 116 129 142 155 167 (13) (15) (18) (20) (22) (24) (25) (27) (29) (30) (31) (33) (34) (35) (41) (47) (53) (59) (64) (70) (76) 2.2 34 41 48 53 58 63 67 71 75 80 83 86 89 92 108 123 139 154 170 185 201 (15) (19) (22) (24) (26) (29) (30) (32) (34) (36) (38) (39) (40) (42) (49) (56) (63) (70) (77) (84) (91) 2.8 40 49 57 63 69 75 80 85 90 95 99 102 106 110 128 147 165 184 202 221 239 (18) (22) (26) (29) (31) (34) (36) (39) (41) (43) (45) (46) (48) (50) (58) (67) (75) (83) (92) (100) (108) 3.6 47 57 66 74 81 88 94 99 105 111 115 120 124 128 150 172 193 215 236 258 280 (21) (26) (30) (34) (37) (40) (43) (45) (48) (50) (52) (54) (56) (58) (68) (78) (88) (98) (107) (117) (127) 300 4.3 69 84 97 109 119 128 137 146 153 163 169 175 182 188 220 251 283 315 346 378 410 LS2 ( 31 ) ( 38 ) ( 44 ) ( 49 ) ( 54 ) ( 58 ) ( 62 ) ( 66 ) ( 69 ) ( 74 ) ( 77 ) ( 79 ) ( 83 ) ( 85 ) ( 100 ) ( 114 ) ( 128 ) ( 143 ) ( 157 ) ( 171 ) ( 186 ) 5 78 96 111 124 136 147 157 166 175 186 193 200 207 215 251 287 323 359 395 432 468 (35) (44) (50) (56) (62) (67) (71) (75) (79) (84) (88) (91) (94) (98) (114) (130) (147) (163) (179) (196) (212) 6.2 96 117 135 151 166 179 191 203 214 227 236 245 253 262 306 351 395 439 483 527 571 (44) (53) (61) (68) (75) (81) (87) (92) (97) (103) (107) (111) (115) (119) (139) (159) (179) (199) (219) (239) (259) 450 10.0 109 141 170 196 220 243 264 285 305 324 343 360 378 395 475 547 615 678 739 796 852 LS3 ( 50 ) ( 64 ) ( 77 ) ( 89 ) ( 100 ) ( 110 ) ( 120 ) ( 130 ) ( 139 ) ( 147 ) ( 156 ) ( 164 ) ( 172 ) ( 180 ) ( 216 ) ( 249 ) ( 279 ) ( 308 ) ( 336 ) ( 362 ) ( 387 ) 600 24 159 206 247 285 320 353 384 414 443 471 498 524 549 574 689 794 892 984 1071 1155 1235 LS3 ( 72 ) ( 94 ) ( 112 ) ( 130 ) ( 145 ) ( 161 ) ( 175 ) ( 188 ) ( 201 ) ( 214 ) ( 226 ) ( 238 ) ( 250 ) ( 261 ) ( 313 ) ( 361 ) ( 405 ) ( 447 ) ( 487 ) ( 525 ) ( 561 ) -7-
Table #9 Stainless Steel Valve Multiple Distributor Steam Pressure to Humidifier's Supply Connection in psig (kpa) Model Valve 2 3 4 5 6 7 8 9 10 11 12 13 14 15 20 25 30 35 40 45 50 Cv (14) (21) (28) (34) (41) (48) (55) (62) (69) (76) (83) (90) (96) (103) (138) (172) (207) (241) (276) (310) (345) 200 0.10 3 3 4 4 5 5 5 6 6 6 6 7 7 7 8 10 11 12 13 14 16 (1) (1) (2) (2) (2) (2) (2) (3) (3) (3) (3) (3) (3) (3) (4) (5) (5) (5) (6) (6) (7) 0.22 5 6 7 8 9 9 10 11 11 12 12 13 13 14 16 18 20 23 25 27 30 (2) (3) (3) (4) (4) (4) (5) (5) (5) (5) (5) (6) (6) (6) (7) (8) (9) (10) (11) (12) (14) 0.40 7 9 10 11 12 13 14 15 16 16 17 18 18 19 22 25 29 32 35 38 41 (3) (4) (5) (5) (5) (6) (6) (7) (7) (7) (8) (8) (8) (9) (10) (11) (13) (15) (16) (17) (19) 0.75 13 16 18 21 23 24 26 28 29 31 32 33 34 36 42 48 54 60 66 72 78 ( 6 ) ( 7 ) ( 8 ) ( 10 ) ( 10 ) ( 11 ) ( 12 ) ( 13 ) ( 13 ) ( 14 ) ( 15 ) ( 15 ) ( 15 ) ( 16 ) ( 19 ) ( 22 ) ( 24 ) ( 27 ) ( 30 ) ( 33 ) ( 35 ) 0.95 16 20 23 26 29 31 33 35 37 39 41 42 44 45 53 60 68 76 83 91 98 (7) (9) (10) (12) (13) (14) (15) (16) (17) (18) (19) (19) (20) (20) (24) (27) (31) (34) (38) (41) (44) 1.30 22 27 31 35 38 41 44 47 49 52 54 56 59 61 71 81 91 101 112 122 132 (10) (12) (14) (16) (17) (19) (20) (21) (22) (24) (24) (25) (27) (28) (32) (37) (41) (46) (51) (55) (60) 1.75 29 36 41 46 50 54 58 61 65 69 71 74 77 79 93 106 119 133 146 160 173 (13) (16) (19) (21) (23) (24) (26) (28) (29) (31) (32) (34) (35) (36) (42) (48) (54) (60) (66) (73) (78) 2.20 35 43 50 56 61 66 71 75 79 84 87 91 94 97 114 130 146 163 179 195 212 (16) (20) (23) (25) (28) (30) (32) (34) (36) (38) (39) (41) (43) (44) (52) (59) (66) (74) (81) (88) (96) 2.80 43 53 62 69 75 81 87 92 97 103 107 111 115 119 139 159 179 199 219 239 260 (20) (24) (28) (31) (34) (37) (39) (42) (44) (47) (49) (50) (52) (54) (63) (72) (81) (90) (99) (108) (118) 3.60 53 65 75 84 92 99 106 113 119 126 131 136 141 145 170 194 219 243 268 292 317 (24) (29) (34) (38) (42) (45) (48) (51) (54) (57) (59) (62) (64) (66) (77) (88) (99) (110) (122) (132) (144) 300 4.3 72 89 102 114 125 135 145 154 162 172 178 185 192 198 232 265 298 332 365 398 432 (33) (40) (46) (52) (57) (61) (66) (70) (73) (78) (81) (84) (87) (90) (105) (120) (135) (151) (166) (181) (196) 5.0 83 101 117 131 143 155 165 175 185 196 203 211 219 226 264 303 341 379 417 455 493 (38) (46) (53) (59) (65) (70) (75) (79) (84) (89) (92) (96) (99) (103) (120) (137) (155) (172) (189) (206) (224) 6.2 100 123 141 158 173 187 200 212 224 237 246 256 265 274 320 366 412 459 505 551 597 (45) (56) (64) (72) (78) (85) (91) (96) (102) (108) (112) (116) (120) (124) (145) (166) (187) (208) (229) (250) (271) 450 10.0 138 176 209 239 266 292 317 340 362 383 404 424 443 462 549 628 700 768 832 894 952 ( 63 ) ( 80 ) ( 95 ) ( 108 ) ( 121 ) ( 133 ) ( 144 ) ( 154 ) ( 165 ) ( 174 ) ( 184 ) ( 193 ) ( 201 ) ( 210 ) ( 250 ) ( 285 ) ( 318 ) ( 349 ) ( 378 ) ( 406 ) ( 433 ) 600 24.0 310 383 445 501 551 597 640 681 720 757 792 826 858 890 1035 1163 1280 1387 1488 1582 1672 ( 141 ) ( 174 ) ( 202 ) ( 228 ) ( 250 ) ( 271 ) ( 291 ) ( 310 ) ( 327 ) ( 344 ) ( 360 ) ( 375 ) ( 390 ) ( 405 ) ( 470 ) ( 529 ) ( 582 ) ( 631 ) ( 676 ) ( 719 ) ( 760 ) -8-
Figure #5 Separator/Valve Dimensions H G F J E A B 3/4" NPT MODEL 200 300 450 600 800 inch mm inch mm inch mm inch mm inch mm A 1/2" NPT 3/4" NPT 1" NPT 1-1/4"/1-1/2" NPT 2" NPT B 1/2" NPT 3/4" NPT 1" NPT 1-1/2" NPT 2" NPT E 3.4 86 4.2 107 5.3 135 5.5 140 6.5 166 F 6.0 152 6.0 152 6.0 152 9.0 229 9.0 229 G 7.7 195 8.8 223 10.5 268 11.2 284 12.6 322 H* 11.2 284 12.2 310 13.9 354 23.7 602 25.0 634 J* 9.7 246 10.3 262 11.3 287 16.0 406 16.0 406 Weight in lbs* 24.8 27.5 33.6 49.1 51.3 Weight in kg* 11.3 12.5 15.3 22.3 23.3 Notes: - Model 600 valve Cv = 20 has nominal diameter of 1 1/4" NPT. - Model 600 valve Cv = 24 or 28 (depends on type of valve; stainless steel or brass) has nominal diameter of 1 1/2" NPT. - Dimensions are based on SIEBE valve and pneumatic actuator. - Weight includes valve, pneumatic actuator, separator, and two F&Tsteam traps. Figure #6 Distributor Dimensions S C Tube Adapter Cross Section Of Distributor N M K Duct Plate Support 2 piece adjustable N Duct Plate Support T L 1.5" Support Bracket Cross Section Of Insulated Distributor (optional) R Stainless Steel Sheath GA 24 S P Fibreglass Insulation MODEL LS1 LS2 LS3 inch mm inch mm inch mm C 1/2" NPT 3/4" NPT 1-1/4" NPT K 1.6 42 2.2 55 2.5 63 M 4.6 117 5.5 140 7.2 183 N 1.5 38 2.0 51 3.0 76 P 2.7 69 3.3 83 4.3 110 R 2.1 52 2.6 66 3.6 92 S 3.0 76 3.9 101 5.2 133 T 4.3 110 4.8 123 5.9 150 Weight in lbs/ft 1.4 1.9 2.8 Weight in kg/m 2.1 2.8 4.2 Figure #7 Single Distributor Humidifier Dimensions C Duct Plate L 1.5" Support Bracket W MODEL 200-LS1 300-LS2 450-LS3 600-LS3 inch mm inch mm inch mm inch mm C 1/2"NPT 3/4" NPT 1-1/4" NPT 1-1/4" NPT V 14.3 363 15.8 401 18.5 470 24.5 622 W 5.8 147 6.8 173 8.3 211 8.7 221 Strainer Size 1/2" NPT 3/4" NPT 1-1/4" NPT 1-1/2" NPT Weight without distributor lb 17.5 20.6 27.4 46.4 V Weight without distributor kg 8 9.4 12.5 21.1 3/4" NPT Notes: - Dimensions are based on invensys valve and pneumatic actuator. - Weight includes valve, pneumatic actuator, separator, F&Tsteam trap, and strainer. - To calculate total weight of single distributor humidifier add distributor weight (Figure #6) to weight without distributor (Figure #7). -9-
SAMPLE SPECIFICATION PART 1 - GENERAL 1.1 SECTION INCLUDES: - Boiler Pressure Steam LS Series 1.2 QUALITY ASSURANCE: a) Manufacturer: For each product specified, provide components by same manufacturer throughout. b) Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authority having jurisdiction, and marked for intended use. c) Comply with ARI 640, Standard for Commercial and Industrial Humidifiers. d) Products shall be supported with a warranty that ensures the product will be free from defects in materials and workmanship for a period of two years after shipment. e) Commissioning of a system or systems specified in this section is part of the construction process. Documentation and testing of these systems, as well as training of the Owner s operation and maintenance personnel, is required in cooperation with the Commissioning Authority. Project Closeout is dependent on successful completion of all commissioning procedures, documentation, and issue closure. Refer to Project Closeout, Section 01700, for substantial completion details. Refer to Section 01810, Commissioning, for detailed commissioning requirements. f) Products specified below are to be manufactured is an ISO 9001-2000 certified facility. 1.3 SUBMITTALS: a) Submit product data under provisions of Section 15010. Include product description, model, dimensions, component sizes, rough-in requirements, service sizes, and finishes. Include rated capacities, operating weights, furnished specialties, and accessories. b) Submit manufacturer s installation instructions. c) Submit operation and maintenance data. d) Submit coordination drawings. Detail fabrication and installation of humidifiers. Include piping details, plans, elevations, sections, details of components, and dispersion tubes. Detail humidifiers and adjacent equipment. Show support locations, type of support, weight on each support, and required clearances. e) Submit wiring diagrams including power, signal, and control wiring. Differentiate between manufacturer-installed and field-installed wiring. f) Submit minimum water quality requirements and water pressure requirements. 1.4 EXTRA MATERIALS: a) Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. 1.5 REFERENCES: a) ANSI/NFPA 70 - National Electrical Code. 1.6 COORDINATION: a) Coordinate location and installation of humidifiers in ducts and air-handling units. Revise locations and elevations to suit field conditions and to ensure proper humidifier operation. XXXXX OR XXXXX a) Coordinate location and installation of humidifier in the space it serves with the electrical, mechanical, and plumbing contractors. PART 2 - PRODUCTS 2.1 PRESSURE STEAM HUMIDIFIER a) Pressure steam humidification using a boiler steam generator as a steam source. b) Pre-Engineered system, for air handler/duct application, complete with steam control valve, valve actuator, steam distributor[s], and steam separator. c) System to be complete with: 1. Operating and safety controls to ensure an automatic and fail-safe system. 2. System to shut down automatically on loss of control signal even when steam pressure is maintained to system. -10-
3. Normally closed steam control valve with equal percent flow characteristics and positive shut off against steam. 4. Stainless steel jacketed distributor[s], allowing pressurized steam through the length of the distributor, to pre-heat the internal dispersion tube. 5. Stainless steel, lightweight steam separator with internal baffle[s] to ensure dry condensate free steam supply to the control valve. d) Steam Distributor to include: 1. Stainless steel tube in tube construction to maximize jacketing of internal dispersion tube (rectangular jacketing with partial internal dispersion tube coverage, requiring plastic inserts, are not acceptable). 2. Internal dispersion tube orifices sized to provide even distribution of the discharged steam across the entire length of the assembly. 3. End bracket to allow parallel, perpendicular or diagonal support. 4. Tube adapter for connection to controlled steam supply. 5. Two piece duct plate to seal air handler/duct wall penetration[s]. e) Control valve to be: 1. Compliant with ANSI B 16.15 class 250 pressures and temperature rating B 16.104 class IV control shut off leakage and ANSI/ISA-575.11 flow characteristics standards. requiring plastic inserts, are not acceptable). 2. Complete with stainless steel seat, stem and plug. f) Standard of acceptance: Nortec LiveSteam. PART 3 - EXECUTION 3.1 EXAMINATION a) Examine ducts, air-handling units, and conditions for compliance with requirements for installation tolerances and other conditions affecting performance. b) Examine roughing-in for piping systems to verify actual locations of piping connections before humidifier installation. c) Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION: a) Install humidifiers and steam dispersion panels per manufacturers instructions b) Seal humidifier dispersion-tube duct penetrations with flange. c) Install with required clearance for service and maintenance. 3.3 TESTING: a) System verification testing is part of the commissioning process. Verification testing shall be performed by the Contractor and witnessed and documented by the Commissioning Authority. Refer to section 01810, Commissioning, for system verification tests and commissioning requirements. XXXXX OR XXXXX a) Manufacturer s Field Service: Engage a factory-authorized service representative to inspect field-assembled components and equipment installation, including piping and electrical connections. Report results in writing. 1. Leak Test: After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist. 2. Operational Test: After electrical circuitry has been energized, start units to confirm proper unit operation. Remove malfunctioning units, replace with new units, and retest. 3. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. 3.4 TRAINING a) Training of the Owner s operation and maintenance personnel is required in cooperation with the Commissioning Authority. Provide competent, factory authorized personnel to provide instruction to operation and maintenance personnel concerning the location, operation, and troubleshooting of the installed systems. The instruction shall be scheduled in coordination with the Commissioning Authority after submission and approval of formal training plans. Refer to System Demonstrations, section 01670, for contractor training requirements. Refer to section 01810, Commissioning, -11-
for further contractor training requirements. XXXXX OR XXXXX a) Engage a factory-authorized service representative to train Owner s maintenance personnel to adjust, operate, and maintain humidifiers. 1. Train Owner s maintenance personnel on procedures and schedules for starting and stopping, troubleshooting, servicing, and maintaining equipment and schedules. 2. Review data in maintenance manuals. Refer to Division 1 Section Contract Closeout. 3. Review data in maintenance manuals. Refer to Division 1 Section Operation and Maintenance Data. 4. Schedule training with Owner, through Architect, with at least seven days advance notice. -12-
NOTES -13-
NOTES -14-
LIMITED WARRANTY AXAIR NORTC INCORPORATED and/or AXAIR NORTEC LIMITED. (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years from date of shipment, that THE COMPANY's manufactured and assembled products, not otherwise expressly warranted, are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations. THE COMPANY's obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer, F.O.B. THE COMPANY s factory, providing the defective part(s) is returned freight prepaid by the customer. Parts used for repairs are warranted for the balance of the term of the warranty on the original humidifier or 90 days, whichever is longer. The warranties set forth herein are in lieu of all other warranties expressed or implied by law. No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product. Any further warranty must be in writing, signed by an officer of THE COMPANY. THE COMPANY's limited warranty on accessories, not of NORTEC's manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier. THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a contractor approved by THE COMPANY to install such equipment. THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment. THE COMPANY retains the right to change the design, specification and performance criteria of its products without notice or obligation.